Icom IC-7800 Service Manual Addendum page 481

• BOTTOM VIEW (SW-C BOARD)
80 75 70 65 60 55 50 45 40
Horizontal
135
130
125
120
J2
1 SP1A
SP1B 2
SP2A
SP2B 115
GND
GND
SNCL
SAPL
9 PITL
3R3V 10
110
to the PBT2 board J1
105
J1
SP1A 1
100
2
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
LDPS
95
SNCD
MNCD
SAUD
MAUD
SAPD
MAPD
SPCD
MPCD
90
NC
GND
SATK
SLCK
MLCK
SSPK
MSPK
85
STSK
MTSK
KI0
KI1
KI2
KI3 29
30
3R3V
80
to the TENKEY board J3
75
70
65
60
55
50
45
40
35
30
• BOTTOM VIEW (SW-B BOARD)
25
20
15
10
5
0
35 30 25 20 15 10 5 0
170
• BOTTOM VIEW (SW-A BOARD)
J3
GND 30
29 GND
3R3V
MSQL
MAGL
PWRL
MIGL
SSQL
SAGL
DELL
KYSL
KI11
KI10
KI9
KI8
KI7
NC
NC
NC
NC
NC
MOND
PWRK
TRAK
SNBD
SNRD
SAGD
MNBD
MNRD
MAGD
TMD
TN2D
TN1D
VOXD
PWRD
STBD
LDPS
NC
GND 2
1 GND
to the DISPLAY board J3
100 95 90
17
J1
18
165 160 155 150 145 140 135 130 125 120 115 110
J1
J2
10
10 3R3V
NC 9
KYSL
DELL
SAGL
SSQL
GND
GND
2
2 GND
GND 1
to the VR-B board J1
to the VR-C board J1
85 80 75 70 65 60 55 50 45
Horizontal
1
to the LOGIC
board J4
2
105 100 95 90 85 80 75 70 65 60 55
Horizontal
8 - 4
95
90
85
80
3R3V
NC 9
75
MIGL
PWRL
MAGL
MSQL
GND
GND
GND
GND 1 70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
40 35 30 25 20 15 10 5 0
25
20
15
10
5
0
50 45 40 35 30 25 20 15 10 5 0